Process for preparing hemostatic dressing.



PATENTED JUNE 30, 1908.

. A. W. BALL. PROCESS FOR PREPARING HBMOSTATIC DRESSING.

APPLICATION FILED MAR. 18, 1907.

ARTHUR WILSON BALL, OF LONDON, ENGLAND.

PROCESS FOR PREPARING HIEMOSTATIO DRESSING.

To'all whom it may concernr Be it known that I, ARTHUR WILSON BALL, a subject of the 'ng of Great Britain, residing at 179 Queen Victoria street, in the city and county of London, England, have invented a new and useful Improvement in Processes for Preparing Hemostatic Dressing, of which the following is'a specification.

My invention relates to improvement in the application of helnostatics derived from the suprarenal glands of any animal for the purpose of stopping external hemorrhage by contraction of the small blood vessels.

The method hitherto employed for the application of the suprarenal glands has been to dip the dressings into the aqueous solution and apply them wet to the bleeding surfaces. In

' addition to the danger ofcollecting septic tic germs.

germs through the exposure of the solution and the dressing to the atmosphere in the wet state, the present procedure has the grave disadvantage that the pressure which it is usually necessary to apply to the dressing forces out the bulk of the liquid which runs away and its effect is lost.

I have devised a method of preparing the dressin with thehemostatic preparation so that w rile retaining the full efficacy of the freshly pre ared solution it can be applied to the woum ed surface in a dry state, and thereby exert its entire efficiency at the point of contact notwithstanding any pressure whichit'may be necessary to apply.

The basis of my dressing consists of the usual cotton wool, gauze or other material or'fabric em loyed for such dressings, and the expresse juice of the suprarenal glands or an aqueous solution of the active princi' ples thereof previously prepared or an alcool solution or any other solution of the active principles is used for saturating the said materials. The operation of saturating the dressing, material, or fabric employed is conducted-in a previously sterilized chamber and the air allowed to come in contact with the solution and the dressing during or after the saturation operations is carefully filtered in the well known manner so as to exclude sep- After saturation with the solution the dressing is exposed in a chamber through which is passe by means of a fan a current of sterilized air which dries from the Specification of Letters Patent. Application filed March 18, 1907. Serial No. 363,010.

.form of a medicated gauze Patented June so, 1908.

material the excess of moisture, leaving the active principles permeating the tissues of the dressing, thereby insuring the constant a plication of the actual active ingredients to t e bleeding surfaces of the wounds.

' A further improvement in the drying of the dressing consists in conductin the drying operation in an atmosphere of iydrogcn, whereby not only are septic germs excluded, but an action of the oxygen of the air upon the so ution is obviated. When saturated and dried, the dressing may be conveniently compressed by hydraulic or other means and reduced to a package of minimum dimensions much more convenient for transport, es )ecially for army medical service.

In order more fully to set forth my invention, I have illustrated-the dressing in the fabric in the accompanyin drawing.

Figure 1 s ows on an enlarged scale a piece of such medicated gauze in plan 'VICW, and Fig. 2 a section thereof. Fig. 3 shows a packet of the dressing compressed, folded and packed in a waterproof paper or the like for sale.

In the sectional view of the fabric shown in Fig. 2, it will be noted that the central warp threads A are shown as composed of a hard cotton core surrounded by a softer material B, which together with the soft wcl't threads 0 is adapted to absorb the glandular solution.

What I claim is:

1. The herein described process for preparing hemostatic dressing, consisting 1n soaking absorbent material m suprarcnal gland extract, and then drying the same in a sterilized atmosphere.

2. The herein described process for proparing hemostatic dressing, consisting n soaking sterilized absorbent material in suprarcnal solution, and then drying the same in an aseptic atmosphere of hydrogen gas.

In testimony name to this specification in the presence 0 two subscribing witnesses.

, ARTHUR WILSON BALL.

Witnesses:

' I'IENRY BURFORD,

FLoRENoE AMELIA Pncx.

whereof I have signed my 

